From b726dc97538b7d4ba71fd06c14161017dd67c2b7 Mon Sep 17 00:00:00 2001
From: xubinbin <1323875150@qq.com>
Date: 星期三, 10 五月 2023 15:38:22 +0800
Subject: [PATCH] "@schedule"是Spring框架提供的一种定时任务执行机制，默认情况下它是单线程执行，项目中多次使用fixedRate按指定频率执行任务(不管前面任务是否已经完成)，在同时执行多个定时任务时可能会出现阻塞和性能问题，为了解决这种单线程瓶颈问题，将定时任务的执行机制改为支持多线程
---
src/main/java/com/genersoft/iot/vmp/storager/dao/DeviceMapper.java | 13 +++++++------
1 files changed, 7 insertions(+), 6 deletions(-)
diff --git a/src/main/java/com/genersoft/iot/vmp/storager/dao/DeviceMapper.java b/src/main/java/com/genersoft/iot/vmp/storager/dao/DeviceMapper.java
index b30ca19..fe739ea 100644
--- a/src/main/java/com/genersoft/iot/vmp/storager/dao/DeviceMapper.java
+++ b/src/main/java/com/genersoft/iot/vmp/storager/dao/DeviceMapper.java
@@ -43,6 +43,7 @@
"geoCoordSys," +
"treeType," +
"online," +
+ "mediaServerId," +
"(SELECT count(0) FROM device_channel WHERE deviceId=device.deviceId) as channelCount "+
" FROM device WHERE deviceId = #{deviceId}")
Device getDeviceByDeviceId(String deviceId);
@@ -160,6 +161,7 @@
"geoCoordSys," +
"treeType," +
"online," +
+ "mediaServerId," +
"(SELECT count(0) FROM device_channel WHERE deviceId=de.deviceId) as channelCount FROM device de" +
"<if test=\"online != null\"> where online=${online}</if>"+
" </script>"
@@ -168,9 +170,6 @@
@Delete("DELETE FROM device WHERE deviceId=#{deviceId}")
int del(String deviceId);
-
- @Update("UPDATE device SET online=0")
- int outlineForAll();
@Select("SELECT " +
"deviceId, " +
@@ -256,7 +255,7 @@
"<if test=\"mediaServerId != null\">, mediaServerId=#{mediaServerId}</if>" +
"WHERE deviceId=#{deviceId}"+
" </script>"})
- int updateCustom(Device device);
+ void updateCustom(Device device);
@Insert("INSERT INTO device (" +
"deviceId, " +
@@ -270,7 +269,8 @@
"asMessageChannel," +
"geoCoordSys," +
"treeType," +
- "online" +
+ "online," +
+ "mediaServerId" +
") VALUES (" +
"#{deviceId}," +
"#{name}," +
@@ -283,7 +283,8 @@
"#{asMessageChannel}," +
"#{geoCoordSys}," +
"#{treeType}," +
- "#{online}" +
+ "#{online}," +
+ "#{mediaServerId}" +
")")
void addCustomDevice(Device device);
--
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